edema

noun

ede·​ma i-ˈdē-mə How to pronounce edema (audio)
1
: an abnormal infiltration and excess accumulation of serous fluid in connective tissue or in a serous cavity

called also dropsy

2
a
: watery swelling of plant organs or parts
b
: any of various plant diseases characterized by such swellings

Examples of edema in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The Diabetes Vision Risk Families Should Know About Wayans is now partnering with biotech company Genentech’s All Eyes on DME initiative to raise awareness of diabetic macular edema, a complication that can rob diabetes patients of their sight. Samantha Agate, Kansas City Star, 1 May 2026 Cleveland Clinic estimates that about one in 14 people with diabetes develop diabetic macular edema. Samantha Agate, Miami Herald, 1 May 2026 Cleveland Clinic notes that about one in 14 people with diabetes develop diabetic macular edema. Samantha Agate, Sacbee.com, 1 May 2026 Diabetic macular edema, or DME, is a complication of diabetes that can lead to vision loss and is one of the leading causes of new blindness in the United States. Samantha Agate, Charlotte Observer, 1 May 2026 See All Example Sentences for edema

Word History

Etymology

New Latin, from Greek oidēma swelling, from oidein to swell; akin to Armenian aytnu- swell, Old English ātor poison

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of edema was in the 15th century

Browse Nearby Words

Cite this Entry

“Edema.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/edema. Accessed 10 May. 2026.

Kids Definition

edema

noun
ede·​ma i-ˈdē-mə How to pronounce edema (audio)
: an abnormal collection of watery fluid in a bodily tissue or cavity

Medical Definition

edema

noun
ede·​ma
variants or chiefly British oedema
plural edemas or chiefly British oedemas also edemata
-mət-ə
or chiefly British oedemata
: an abnormal excess accumulation of serous fluid in connective tissue or in a serous cavity

called also dropsy

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